{"id":301,"date":"2022-03-18T19:28:19","date_gmt":"2022-03-18T18:28:19","guid":{"rendered":"https:\/\/lecompagnonrouge.fr\/?p=301"},"modified":"2022-10-08T19:59:43","modified_gmt":"2022-10-08T17:59:43","slug":"taraxacum-section-ruderalia-pissenlit","status":"publish","type":"post","link":"https:\/\/lecompagnonrouge.fr\/?p=301","title":{"rendered":"Taraxacum (Section Ruderalia?). Pissenlit"},"content":{"rendered":"\n<p class=\"has-medium-font-size\">Les pissenlits ne sont pas hyper identifiables entre eux (voir plus bas).<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Deux groupes courants , la section ruderalia (comprenant le Pissenlit Officinale) et la section Hamata sont tr\u00e8s proches l&rsquo;un de l&rsquo;autre.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">L&rsquo;usage est donc de dire \u00ab\u00a0Un Pissenlit\u00a0\u00bb sans d\u00e9velopper plus avant &#8230;<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Cependant, le Pissenlit pr\u00e9sent\u00e9 ici peut \u00eatre de la section Ruderalia, <\/p>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"992\" height=\"744\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/03\/tarax1.jpg\" alt=\"\" class=\"wp-image-303 size-full\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/03\/tarax1.jpg 992w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/03\/tarax1-300x225.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/03\/tarax1-768x576.jpg 768w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/03\/tarax1-850x638.jpg 850w\" sizes=\"auto, (max-width: 992px) 100vw, 992px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-medium-font-size\"><\/p>\n\n\n\n<p class=\"has-medium-font-size\">En raison des caract\u00e9ristiques suivantes:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>lobes des feuilles assez larges.<\/li><li>bract\u00e9es fortement retourn\u00e9es.<\/li><li>Absence de stries rouges et vertes sur la nervure principale de la feuille (comme cela peut \u00eatre le cas dans la section Hamata)<\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">Taux de certitude pour l&rsquo;identification incomplet.<\/p>\n\n\n\n<p><\/p>\n<\/div><\/div>\n\n\n\n<p class=\"has-medium-font-size\">Taraxacum section Ruderalia (section Taraxacum): prairie p\u00e2tur\u00e9e m\u00e9sohydrique.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Les pissenlits forment le plus souvent des populations apomictiques \u00e0 morphologie tr\u00e8s variables, cette variabilit\u00e9 \u00e9tant influenc\u00e9e par le milieu.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">L&rsquo;identification ne peut avoir lieu que sur le premier cycle annuel de floraison. Il sera n\u00e9cessaire en outre la fructification de ce cycle de floraison. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>A regarder sur place: si la plante est tr\u00e8s pollinif\u00e8re ou au contraire peu pollinif\u00e8re.<\/li><li>A pr\u00e9lever: capitules, feuilles (au moins 3, et sur plusieurs plants) et ak\u00e8nes.<\/li><li>Photographier forme des feuilles. Photographier bract\u00e9es. Photographier bouton floral.<\/li><li>Observer villosit\u00e9 du p\u00e9doncule (poils r\u00e9partis seulement en haut, ou sur la totalit\u00e9 du p\u00e9doncule)<\/li><\/ul>\n\n\n\n<p>. <\/p>\n\n\n\n<p class=\"has-medium-font-size\">Toutes ces pr\u00e9cautions ne donneront pas n\u00e9cessairement  plus de pr\u00e9cisions fiables, et notamment pour la section taraxacum en zones ouvertes (et rud\u00e9rales). La mise en culture (\u00e9ventuellement sur plusieurs ann\u00e9es) est recommand\u00e9e.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-medium-font-size\">En zones planitiaires, s&rsquo;attacher notamment aux sections Celtica, Ruderalia (d\u00e9sormais nomm\u00e9e Taraxacum), Hamata,  Erythrosperma, Palustria<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/lecompagnonrouge.fr\/?s=asterales\">Asterales<\/a>><a href=\"https:\/\/lecompagnonrouge.fr\/?s=asteraceae\">Asteraceae<\/a>><a href=\"https:\/\/lecompagnonrouge.fr\/?s=Cichorioideae\">Cichorioideae<\/a>><a href=\"https:\/\/lecompagnonrouge.fr\/?s=Cichorieae\">Cichorieae<\/a>> Taraxacum section taraxacum (= sect. ruderalia)<\/p>\n\n\n\n<p>Merci de consulter <a href=\"https:\/\/lecompagnonrouge.fr\/\">la charte de navigation<\/a> (notamment droits concernant les images), parfois suivie d&rsquo;un \u00e9dito.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les pissenlits ne sont pas hyper identifiables entre eux (voir plus bas). Deux groupes courants , la section ruderalia (comprenant le Pissenlit Officinale) et la section Hamata sont tr\u00e8s proches l&rsquo;un de l&rsquo;autre. L&rsquo;usage est donc de dire \u00ab\u00a0Un Pissenlit\u00a0\u00bb sans d\u00e9velopper plus avant &#8230; Cependant, le Pissenlit pr\u00e9sent\u00e9 ici peut \u00eatre de la section&#8230;<\/p>\n","protected":false},"author":1,"featured_media":302,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,198,197,82,83],"tags":[81],"class_list":["post-301","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-asteraceae","category-cichorieae","category-cichorioideae","category-taraxacum","category-taraxacum-section-ruderalia","tag-pissenlit"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Taraxacum (Section Ruderalia?). 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